Steam-turbine.



E. Y. EDGAR.

STEAM TURBINE.

APPLIUATION FILED SEPT. 1a, 1910.

80,504. l Patented' Jan. 3, 1911.

2 SHEETS-SHEET 1.

E. P. EDGAR.

STEAM TUBBINE.

APPLIGATION FILED SEPT. 1a, 1910.

Patented Ja1`1.3, 1911.

2 SHEETS-SHEET 2.

\| l l I l I i I l 98ans'- Um'rnn STATES 'PATENT ormon.

ELLIS F. EDGAR, OF WOODBRIDGE, NEW JERSEY,

t tainC vnew and useful Improvements in Steam- 'Iltirbine Engines,aspecicat-ion. f Figure 1 is an end elevation mostly in fullt and a partin a section at line 1-1 in of which the following is Fig'..2.i- F ig. 2is a side elevation part'in full? and part in section.A

',I had in view in designing this engine an engine capable of using aworking pressureup to fiveuthousand (5,000) pounds or more with higheconomy as yhereinafter set forth.

F '10,'/15- exhaust `casing of steam chest,

Details of construction-L side casing, 2 end casing, 3- main drivingshaft, 4- long moving blades, 5 reacting moving blades, 6- guides, 7steam chest, 8 ring 9- primary feed valve, 10-I automatic controllingfeed valve, 11-',;opening and closing cam, 12 ball governor, 134- mainsteam line from generator, 14.-, steam connection from valve 9 to valvepipes, 16 lsteam connec tion from main line to primary feed valve 9,17-driving wheel connecting long moving blades 4 to main driving shaft3, 18 driving wheel connecting reacting and moving bladesf by gearing tomain driving shaft 3, l9- feed line from automatic controlling valve 10to steam chest 7, 20 teeth on inner .edge of driving wheel 18, meshingwith small gear wheel 21, 22* small gear wheels 21 and 23, 23- smallgear wheel meshing with gear wheel 24 connected to main driving shaft 3,25 exhaust cham ber, 26- roller bearing for driving wheel 18.

General descrz'ptz'0n.-This engine is constructed preferably with asteam chest constructed in a heavy ring casing surrounding a maindriving shaft having connections to spreader guides terminating in a ongnarrowimouth whereby the steam is delivered in. a wide sheet on longmoving blades 4 so arranged as to form long diverging -nozzles betweensaid blades whereby the steam is expanded many times'before beingexhausted' on reacting and moving blades 5, which are spaced closertogether than the exhaust space between moving blades et.

I do not confine myself to the spacing Shown here between reacting andmoving blades 5 as I may contract the space between shaft carryingspecification of Letters Patent. Application filed September 13, 1910.Serial No. 581,752.

these blades at their exhaust end so as to offer more resistance to theexhaust from moving blades 4. Moving blades 4. and 5 move in oppositedirections, but. operate main driving shaft 3 in the same direction. Theobject in not having reacting blades 5 stationary is to utilize thefriction produced by the exhaust from moving blades l while passing overthe surface of blades 5. I do not confine myself to having my steamchest located in the center around the driving shaft as I may place thesteam chest just inside of the outer casing especially in the multiplesteam chest types where there would be more than two rows of blades asshown in this case. I show here one row of blades on each side ofdriving wheel 17, each exhausting on a row ofreacting and moving blades5. I show driving' wheel 17 extending almost to outer casing 1 leavingonly a slight clearance forming a partition in exhaust chamber 25. Theseblades might extend the full width of exhaust vchamber 25 having longbolts running through them securing them to driving wheels 18 or, theymight be lcast on one side of driving wheels 18, orthey might beotherwise secured, either on one or both sides as driving wheels 18might be arranged differently, especially when the steam chest would belocated just inside of the outer casing where the exhaust steam chamber25 is now located and the exhaust steam chamber l.would thenbe locatedin the center around driving 'shaft The manner in which high economy isobtained in this engine is as follows, by first passing the steam fromthe generator through Patented'aan. s, 1911.

primary valve 9, /which is composed of a balanced cylinder puppet valveoperated by an opening and closing cam, this valve 9 delivers steam tovalve 10, which is also composed of abalanced cylinder puppet valvewhich is operated by an automatic governor.

The object of the opening and closing cam on valve 9 is in the case of amultiple steam chest type that each steam chest will be equipped withone automatic valve 10 and one primary feed valve 9 and only asufficient number of valves 9,' will be opened by the opening andclosing cams to take care of the load as therobject of these valves isto always deliver boiler pressure to valves 10, thereby giving economyif properly used after leaving steam chest 7.` Valves 10 are to takecare of any sudden change of load to prevent the engine running away bycutting off the steam automatically as the valves will be arranged tocut out at different speeds so that only a sufficient number will remainopen to take care of vthe load after the steam leaves steam chest 7 tospreader guides (5, the steam is spread in` these guides to a wide thinsheet whereby the steam is delivered in this form on wide long movingblades and expanded to any desired pressure when entering upon thereacting moving blades. In this manner this engine can be built t0handle any desired .pressure economically by expanding the steam andeliminating the friction on the reacting and moving, yblades as setforth. Preferably I would connect the long moving y blades 4 secured -todriving wheel 17 directto driving shaft 3 and reacting and moving blades5 secured to driving wheel 18. I would connect to driving shaft 3 bygearing substantially as s owii. Itfwould be necessary to have severalof the small gear wheels Q1 meshing into teeth Q0 on the inner surfaceof driving wheellS to properly support y dvriving wheel 1S. Rollerbearing 26 is a further support for driving wheel 18.

/ Having described my invention what I claim as new and desire to secureby Letters Patent'is:

l. A steam turbine engine having one or more steam' chests, spreaderguides connected thereto and terminating in a long narrow mouth, longmoving blades with diverging curved surfaces receiving steam therefromand forming long curved diverging' nozzles, `whercby the steam yisexpanded many times before exhausting from said nozzles, substantiallyas set forth.

2. A steain turbine engine having one or more steam chests connected tospreader guides,terminating in a long narrow mouth,

- said guides so formed as to spread the steam in a thin sheet at themouth of said guides leading to long moving blades with a curvedsurfaceso arranged as to form long curved diverging nozzles between saidlon moving blades whereby the steam is expan ed many times beforeexhausting from said nozzles on reacting moving blades receiving steamfrom said long blades and mounted' on a wheel secured to a drivingshaft, substantially as set '-forth.y

3. A steam turbine engine havin one or more steam chests connected toguides leading tolong moving blades with long diverging surfaces soarranged as to form Aldngdiverging nozzles between them said long moving blades receiving steam from said iides and exhausting on reactingmoving lades securedv to a driving wheel said driving wheel beingcarried on roller bearin s and an kexhaust chamber entirely surroun ingsaid reacting movin@ blades at their exhaust end, said reacting badesand said. long movin blades being connected to a driving shaft alsubstantially as set forth.

ELLIS F. ED(`J`rAR.l

vWitnesses LAURA E. SMITH, I. B. EDGAR.

